Outlet unit for ventilating plants



1961 s. H. KRISTIANSEN 3,005,397

OUTLET UNIT FOR VENTILATING PLANTS Filed Nov. 14. 1957 9 1 I l. I

4 1o 5 20 \19 I 4 Fig.1 t ll 3 I 6 r I u I! 14 43 i j r r .1 NJ

,0 0UTLET"'UNIT;'FOR VENTILATING PLANTS Svend Helge Kristiansen,"Naestved, .Denma'rk, assignor, lay-*mes'ne -assignments; to :Hi-PressAir Conditioning of Ame'rica, Inc., New' York,-N .Y.

1 FiledNov; 14, 1957, Ser. No. 696,490 .;2- Claims. (Cl. 98-:40)

n ited States atent tion, and though the relatively largeamount ofsucked in room air and the thorough mixing of secondary and primary airintheunitiitself prevent excessive local-velocities it will,nevertheless, be important that the, stream of air discharged from theoutletmay be'directed in the desired way in relation .tocthe. walls ofthe room. Normallythis will :not causeanydilficultyin comparativelylarge rooms in buildings, :whereas it may .provedifiicult to securesatisfactory tcirculationin. small .or irregularly shaped spaces,particularlyzinmeanslof .transportation, for instancesin ships cabins,when standard types of units are employed. Finally, it may in-certaincases-bedesirable to have different: patterns :of-.circulation the: sameroom at. different times.

With a view to attaining the aforementioned object this inventionprovides an outlet device of the type described, consisting of two partswhich are rotatably interconnected, the one part, to which the fresh airsupply is connected, containing regulating devices for the air supply,whereas the other part is divided by a transverse partition with nozzleorifices into a plenum chamber into which the air enters from the firstpart, and an induction chamber provided with room air inlets in one ormore side walls and outlet openings for the mixture of room air andsupply air in the end wall opposite to the partition.

This outlet design makes it possible to lead the mixture of room air andsupply air in any desired direction without the necessity of alteringthe position of more than one part of the outlet unit, and withoutinterfering with the supply air connections, whereby the necessity ofhaving movable supply air connections with the consequent risk ofleakages is obviated. Thus, it will be possible, through the use ofprefabricated standard parts, to secure the desired pattern ofcirculation under any kind of installation conditions by the properadjustment of the part of the unit which contains the induction chamberand outlet openings for the discharged air. I

With a special view to marine applications the stationary part of theunit may appropriately be made in the shape of a flat, prismatic box,dimensioned for location between deck beams below the ceiling of cabins,the other part of the unit, which is rotatably attached to the undersurface of the box, being free to move in a horizontal plane immediatelybelow the lower edge of the deck beams.

The unit would thus occupy the least possible amount of useful space,and the circulationof air might be adjusted once and for all during theinstallation or at any time during the operation of the unit to flow inany desired direction by turning the swivelling part of the unit whichmoves freely under the ceiling. Incidentally, the embodiment mayappropriately incorporate a fixed spider mounted axially in the openingof the stationary part communicating with the swivelling part, thisspider being provided with a hub forming an axis of rotation for themovable part and fitted with operating controls for the air regulatingmechanisms projecting through the movable part.

Ratented Oct. 24, 1961 .Thisarrangement secures that the air-regulatingdevices always remain in place withoutvariation of the setting,

embodiment in which FIG. 1 gives a partiallyschematic, longitudinalsection through an outlet unit according to theinvention, designed formarine application, and

- FIG. 2 is a section along line 11- 11 in FIG. 1.

As illustrated in the drawings, the outlet unit comprises -a firstbox-like enclosure 1 to be mounted in fixed position in a room which isto be ventilated and having separate hot-and cold air inlet ducts 3 and4entering one'endxof .thea'.enclosure,.the top, opposite end, and sidewalls of the enclosure being closed. In order tocontrol the proportionsof hot and cold air entering the enclosure 1 from the ducts 3 and 4,respectively, two valves 9 and 10, controlled by rotation ofcorresponding shafts 13 and 14 are mounted in theinner. ends of theinlet ducts, respecitively. Also, to reducemoise caused by the flow of.air

through the valves, a sound trap 5 composed, for example, of atransverse'row of adjacent vanes sloping alternately, upwardly anddownwardly. from the center of the enclosure :may be included in theoutlet unit;

Near: the opposite end i015 the. enclosure 1 an annularrimrfiiszmountedina correspondingcircular opening in thebottom surfaceof the enclosure and three spoke-like legs aifixed to.the converge.:upwardlyand inwardly therefrom to support a hub member 16 centrally ofthe opening, thus forming a spider. Another box-like enclosure 2 ismounted for rotation about the opening in the bottom surface of theenclosure 1 by a vertical shaft extending downwardly from the hub 16 anda cap member at the lower end of the shaft having an annular flangeextending outwardly to support the lower wall of the enclosure 2. Acircular opening in the top of the rotatable enclosure communicates withthe opening in the fixed enclosure and an annular gasket surroundingthese openings prevents leakage of air through this connection whilepermitting rotation of the enclosure 2 with respect to the fixedenclosure 1. Thus, in order to direct air to any particular area of aroom the enclosure 2 can be turned, as by hand for example, to therequired orientation.

A transverse partition 18 closes ofi the pivoted end of the enclosure 2to divide the enclosure into a plenum chamber 20 receiving air atrelatively high pressure and an induction chamber at the end oppositethe pivoted mounting. A plurality of orifices in the partition 18, suchas the vertical slots 19 shown in the drawings, direct primary air atrelatively high velocity from the plenum chamber 20 into the inductionchamber and toward outlet openings 7 at the opposite end of theenclosure. At the bottom wall of the induction chamber an inlet grille 8permits air from the room to be drawn in by induction and mixed with thestream of primary air from the slots 19, the mixture of room air andprimary air then being discharged through the outlet openings 7 atrelatively low velocity.

In order to operate the valves 9 and 10 from a position Within the rooma control knob 15, connected through a shaft within the hub 16 andthrough a conventional pivoted linkage, turns tw o adjust-ing shafts 13and 14 which are linked to the valve shafts 11 and 12 through twoconnecting rods 17, respectively, only one of which is visible in FIG.2.

The detailed design of these regulating mechanisms is of no consequenceas far as the invention is concerned, and the supply of primary air maycomprise hot air only or cold air only, depending on the design of theventilating plant in question.

The stationary box 1 may contain heat exchange devices in the shape ofheating or cooling coils, the regulating mechanisms of which may bearranged in a similar manner as the schematically illustrated operatingcontrols 15.

What I claim is:

l. A ventilating system comprising a fixed enclosure arranged to receiveair under pressure and having an opening in one wall, a second generallyoblong enclosure having a corresponding opening in one side wall andadjacent to one end, said one side wall being located parallel andadjacent to said one wall of the fixed enclosure with the correspondingopenings in alignment, support means between the fixed enclosure and thesecond enclosure for supporting the second enclosure for rotationrelative to the fixed enclosure about an axis perpendicular to the twoopenings so that the second enclosure communicates with the fixedenclosure through the two openings, outlet means at the other end of thesecond enclosure to direct air received from the first enclosure awayfrom the axis of rotation, a transverse partition in the secondenclosure dividing this enclosure into a plenum chamber communicatingwith the fixed enclosure and an induction chamber communicating with theoutlet means and having a plurality of orifices to direct air from theplenum chamber toward the outlet means, and a grille in one side of theinduction chamber to permit air to be drawn in from outside the secondenclosure by induction.

2. A ventilating system comprising a fixed enclosure arranged to receiveboth hot and cold air under pressure and having an opening in one wall,valve means for controlling the amounts of hot and cold air entering theenclosure, a sound trap positioned within the fixed enclosure betweenthe valve means and the opening, a second generally oblong enclosurehaving a corresponding opening in one side wall and adjacent to one end,said one side wall being located parallel and adjacent to said one wallof the fixed enclosure with the corresponding openings in alignment,support means between the fixed enclosure and the second enclosure forsupporting the second enclosure for rotation relative to the'fixedenclosure about an axis perpendicular to the two openings so that thesecond enclosure communicates with the fixed enclosure through the twoopenings, outlet means at the other end of the second enclosure todirect air received from the first enclosure away from the axis ofrotation, a transverse partition in the second enclosure dividing thisenclosure into a plenum chamber communicating with the fixed enclosureand an induction chamber communicating with the outlet means and havinga plurality of orifices to direct air from the plenum chamber toward theoutlet means, and a grille in one side of the induction chamber topermit air to be drawn in from outside the second enclosure byinduction.

References Cited in the file of this patent UNITED STATES PATENTS1,783,005 Stewart Nov. 25, 1930 2,644,389 Dauphinee July 7, 19532,724,320 Tutt Nov. 22, 1955 2,737,875 Kurth et al Mar. 15, 19562,741,971 Wheeler Apr. 17, 1956 FOREIGN PATENTS p 267,656 Great BritainMar. 24, 1957

